Centrifugal air-compression pump



(No Model.)

J. ANDERSON & A. BERNSEN. GENTRIFUGAL AIR COMPRESSION PUMP No. 564,634. Patented Feb. 11,1896.

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Nrrnn STATES JOHN ANDERSON AND ANDRElV BERNSEN, OF DENVER, COLORADO.

CENTRIFUGAL AIR-COMPRESSION PUMP.

SPECIFICATION forming part of Letters Patent l\l'0. 554,634, dated February 11, 1896. Application filed August 2, 1895. Serial No. 558,035. (No model.)

To all whom it may concern.-

Be it known that we, JOHN ANDERSON and ANDREW BnRNsEN, citizens of the United States of America, residing at Denver, in the county of Arapahoe and State of Colorado, have invented certain new and useful Improvements in Centrifugal Air-Compression Pumps; and we do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains'to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

Our invention relates to improvements in centrifugal air-compression pumps; and it consists of the features hereinafter described and claimed, all of which will be fully understood by reference to the accompanying drawings, in which is illustrated an embodiment thereof.

In the drawings, Figure 1 is a vertical longitudinal section taken through the apparatus. Fig. 2 is a horizontal section taken on the line 00 cc of Fig. 1, looking downward.

Similar reference characters indicating corresponding parts in the views, letthe numeral 10 designate an upright tank partly filled with water, the water-space being indicated by the numeral 6 and the air-space above by the numeral 5. The portion of the tank inclosing the air-space 5 is air-tight, while the bottom or lower part of the tank is provided with an outlet-aperture communicating with a suitable discharge-pipe H. Attached to the inner surface of the bottom of the tank and extending upward therein is a post or standard E having a socket E in its upper extremity.

Located within the air-space 5 of the tank is a wheel D, comprising a hollow hub D and tubular open-ended horizontally-curved arms D communicating with the interior of the hub. Made fast to the upper side of the hub, and also communicating with the interior thereof, is a hollow shaft B, which passes through the top of the tank and projects above the same. This shaft is surrounded by a stuffing-box 7 attached to the top of the tank. Below the wheelD and engaging the socket E in the post E is located a foot-shaft B, carrying a plate B at its upper extremity. This plate is made fast to the lower surface of the hollow hub. Attached to the shaft B above the tank is a pulley O, which may be connected with any suitable motor for the purpose of obtaining the necessary power to rotate the hollow shaft and its attachments. The upper extremity of the hollow shaft B, which is open,communicates with a stationary supplypipe A connected with or leading from any suitable source of water-supply. The engaging extremities of the pipe A and the hollow shaft B are surrounded or connected by a Stuffing-box 9.

The tank 10 is supplied with water through the instrumentality of the pipe A, hollow shaft B and the wheel D. The rotation of the shaft B in the direction indicated by the arrow (see Fig. 2) causes the water to rush forcibly out of the curved arms D of the wheel D. As the water rises in the tank the air is compressed in the upper part 5 thereof. The water continues to rush out of the hollow arms notwithstanding the increased resistance of the air-pressure, since the rapidity of the shafts rotation may be so regulated as to produce this result. hen the water has reached a certain level in the tank the air will be condensed sufficiently to react on the water and force it out of the discharge-pipe H. This water may be utilized for operating elevators or for any other desired purpose.

If found necessary air may be introduced to the part 5 of the tank by the way of a small tube or pipe 12 passing down through the hollow shaft and opening into the hollow hub of the wheel. The upper extremity of this pipe is exposed and controlled by a suitable valve 13.

Having thus described our invention, what we claim is- In a centrifugal air-compression pump, the combination of a tank whose upper portion is air-tight, said tank having an outlet at, or near, its bottom, said outlet being connected with apparatus offering sufficient resistance to cause the water to accummulate in the tank, a hollow rotatable shaft projecting into the upper part of the tank, means connected with said shaft for discharging water into the tank by centrifugal force, said means being located in the upper "part of the tank above the water, and comprising a hollow hub and hollow horizontally-curved arms projecting therefrom, means for supplyingthetank with Water by way of the hollow shaft and its connections, a vent-tube passing through the hol- 10w rotatable shaft and communicating with the hollow hub at one extremity and with the external air at the opposite extremity, a valve attached to the exterior extremity of said tube, and means for rotating the shaft whereby water is discharged into the tank by centrifugal force and the air Within the upper part of the tank compressed sufficiently ,to

cause it to react 011 the water in the lower part of the tank and force the same through the outlet at the bottom, substantially as described.

In testimony whereof we affix our signatures in the presenceof two witnesses.

JOHN ANDERSON. ANDREW BERNSEN. Witnesses:

ALFRED J. OBRIEN, GEORGE WAHRENBERGER. 

